From: Magnus Damm <magnus.damm@gmail.com>
To: linux-renesas-soc@vger.kernel.org
Cc: Magnus Damm <magnus.damm@gmail.com>
Subject: [PATCH/RFC 03/03] arm64: dts: renesas: eagle: NOR flash SPI bitbang prototype
Date: Fri, 19 Jan 2018 04:07:37 +0900 [thread overview]
Message-ID: <151630245794.14098.8902060257525149943.sendpatchset@little-apple> (raw)
In-Reply-To: <151630243226.14098.14517816422611139335.sendpatchset@little-apple>
From: Magnus Damm <damm+renesas@opensource.se>
Drive the NOR flash chips via SPI bitbang instead of via the two
channels of QSPI hardware. This is useful to test the on-chip GPIO
devices.
Not-Yet-Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
---
arch/arm64/boot/dts/renesas/r8a77970-eagle.dts | 36 ++++++++++++++++++++++++
1 file changed, 36 insertions(+)
--- 0002/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts
+++ work/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts 2018-01-19 03:47:16.380607110 +0900
@@ -31,6 +31,42 @@
/* first 128MB is reserved for secure area. */
reg = <0x0 0x48000000 0x0 0x38000000>;
};
+
+ spi_flash@0 {
+ compatible = "spi-gpio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ gpio-sck = <&gpio5 0 0>;
+ gpio-mosi = <&gpio5 1 0>;
+ gpio-miso = <&gpio5 2 0>;
+ cs-gpios = <&gpio5 5 0>;
+ num-chipselects = <1>;
+
+ flash@0 {
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <30000000>;
+ };
+ };
+
+ spi_flash@1 {
+ compatible = "spi-gpio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ gpio-sck = <&gpio5 6 0>;
+ gpio-mosi = <&gpio5 7 0>;
+ gpio-miso = <&gpio5 8 0>;
+ cs-gpios = <&gpio5 11 0>;
+ num-chipselects = <1>;
+
+ flash@1 {
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <30000000>;
+ };
+ };
};
&avb {
prev parent reply other threads:[~2018-01-18 19:08 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-18 19:07 [PATCH/RFC 00/03] arm64: dts: renesas: Eagle V3M PFC/GPIO update and SPI NOR flash bitbang hack Magnus Damm
2018-01-18 19:07 ` [PATCH/RFC 01/03] arm64: dts: renesas: r8a77970: Add PFC node for Eagle V3M Magnus Damm
2018-01-19 8:29 ` Sergei Shtylyov
2018-01-18 19:07 ` [PATCH/RFC 02/03] arm64: dts: renesas: r8a77970: Add GPIO nodes Magnus Damm
2018-01-19 8:35 ` Sergei Shtylyov
2018-01-18 19:07 ` Magnus Damm [this message]
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